<template>
    <div>
        <!-- 导航 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>参数列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 列表 -->
        <el-card>
            <!-- 警告 -->
            <el-alert show-icon title="注意！只允许为第三级分类设置相关参数" type="warning" :closable="false"></el-alert>
            <!-- 选择商品分类区域 -->
            <el-row class="cat_opt">
                <el-col>
                    <span>选择商品分类:</span>
                    <!-- 商品分类级联框 -->
                     <el-cascader expand-trigger="hover" v-model="selectCateKeys" :options="cateList" :props="cateProps" @change="handleChange"></el-cascader>
                </el-col>
            </el-row>

            <!-- tab页签区域 -->
             <el-tabs v-model="activeName" @tab-click="handleClick">
                <el-tab-pane label="动态参数" name="many">
                    <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addTitleDialogVisible = true">添加参数</el-button>
                    <!-- 动态参数表格 -->
                    <el-table :data="manyTableData" border stripe>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <!-- tag标签 -->
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                                <!-- 输入新标签 -->
                                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)"></el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                            </template>
                        </el-table-column>
                         <el-table-column type="index"></el-table-column>
                         <el-table-column prop="attr_name" label="参数名称"></el-table-column>
                         <el-table-column label="操作">
                             <template slot-scope="scope">
                                  <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialogVisible(scope.row.attr_id)">编辑</el-button>
                             <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteEditDialogVisible(scope.row.attr_id)">删除</el-button>
                             </template>
                         </el-table-column>
                    </el-table>
                </el-tab-pane>
                <!-- 静态区域 -->
                <el-tab-pane label="静态属性" name="only">
                    <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addTitleDialogVisible = true">添加属性</el-button>
                    <!-- 静态表格 -->
                    <el-table :data="onlyTableData" border stripe>
                        <el-table-column type="expand">
                            <template slot-scope="scope">
                                <!-- tag标签 -->
                                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                                <!-- 输入新标签 -->
                                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)"></el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                            </template>
                        </el-table-column>
                         <el-table-column type="index"></el-table-column>
                         <el-table-column prop="attr_name" label="属性名称"></el-table-column>
                         <el-table-column label="操作">
                             <template slot-scope="scope">
                                  <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialogVisible(scope.row.attr_id)">编辑</el-button>
                             <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteEditDialogVisible(scope.row.attr_id)">删除</el-button>
                             </template>
                         </el-table-column>
                    </el-table>
                </el-tab-pane>
             </el-tabs>
        </el-card>
        <!-- 添加参数对话框 -->
        <el-dialog :title="'添加'+titleName" :visible.sync="addTitleDialogVisible" width="50%" @close="addDialogClose">
            <!-- 添加参数 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
                <el-form-item :label="titleName" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addTitleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addParams">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改参数对话框 -->
        <el-dialog :title="'修改'+titleName" :visible.sync="editTitleDialogVisible" width="50%" @close="editDialogClose">
            <!-- 修改参数 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
                <el-form-item :label="titleName" prop="attr_name">
                    <el-input v-model="editForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editTitleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editParams">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default ({
    data(){
        return{
            cateList:[],
            cateProps:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            selectCateKeys:[],
            activeName:'many',
            // 动态
            manyTableData:[],
            // 静态
            onlyTableData:[],
            // 添加参数关闭对话框
            addTitleDialogVisible:false,
            // 添加参数
            addForm:{},
            // 添加参数规则
            addFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数',trigger:'blur'}
                ]
            },
            // 修改参数关闭对话框
            editTitleDialogVisible:false,
            // 修改参数
            editForm:{},
            editFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数',trigger:'blur'}
                ]
            }
        }
    },
    created(){
        this.getCateList()
    },
    methods:{
       async getCateList(){
          const {data:res} = await this.$http.get('categories')
          if(res.meta.status!==200){
              return this.$message.error('获取数据失败')
          }
          this.cateList=res.data
          console.log(this.cateList);
        },
       handleChange(){
          this.getParamsData()

        },
       async getParamsData(){
              if(this.selectCateKeys.length!==3){
                this.selectCateKeys=[]
                this.manyTableData=[]
                this.onlyTableData=[]
                return false
            }
          const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
          if(res.meta.status!==200){
              return this.$message.error('获取参数列表失败')
          }
          console.log(res.data)
          res.data.forEach(item => {
             item.attr_vals= item.attr_vals? item.attr_vals.split(' ') :[]
             item.inputVisible=false
             item.inputValue=''
          })
          console.log(res.data)
          if(this.activeName==='many'){
              this.manyTableData=res.data
          }else{
              this.onlyTableData=res.data
          }
        },
        handleClick(){
            this.getParamsData()
            console.log(this.activeName);
        },
        addDialogClose(){
            this.$refs.addFormRef.resetFields()
        },
        addParams(){
            this.$refs.addFormRef.validate(async valid => {
                if(!valid)return
             const {data:res}=  await this.$http.post(`categories/${this.cateId}/attributes`,{
                   attr_name:this.addForm.attr_name,
                   attr_sel:this.activeName
                })
             if(res.meta.status!==201){
                 return this.$messages.error('获取参数id失败')
             }
               this.addTitleDialogVisible = false
               this.getParamsData()
            })
        },
        editDialogClose(){
            this.$refs.editFormRef.resetFields()
        },
        editParams(){
            this.$refs.editFormRef.validate(async valid => {
                if(!valid)return
             const {data:res} =  await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
                 attr_name:this.editForm.attr_name,
                 attr_sel:this.activeName
             })
             if(res.meta.status!==200){
                 return this.$message.error('修改数据失败')
             }
             this.$message.success('修改数据成功')
             this.getParamsData()
             this.editTitleDialogVisible = false
            })
        },
       async showEditDialogVisible(id){
           const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${id}`,{
               params:{attr_sel:this.activeName}
           })
           if(res.meta.status!==200){
               return this.$message.error('获取id失败')
           }
            this.editForm=res.data
            this.editTitleDialogVisible = true
        },
      async  deleteEditDialogVisible(id){
         const confirmResult=  await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if(confirmResult!=='confirm'){
            return this.$message.info('已取消删除')
        }
      const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${id}`)
      if(res.meta.status!==200){
          return this.$message.error('删除数据失败')
      }
      this.$message.success('删除数据成功')
      this.getParamsData()
      
        },
        // 文本框失去焦点
       async handleInputConfirm(row){
            if(row.inputValue.trim().length===0){
                row.inputValue=''
                 row.inputVisible=false
                 return false
            }
           row.attr_vals.push(row.inputValue.trim())
           row.inputValue=''
           row.inputVisible=false
        //    请求
     this.saveAttrvalues(row)
        },
        // 调用
       async saveAttrvalues(row){
             const {data:res} =  await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
            attr_name:row.attr_name,
            attr_sel:row.attr_sel,
            attr_vals:row.attr_vals.join(' ')
        })
        if(res.meta.status!==200){
            return this.$message.error('请求编辑提交参数失败')
        }
       this.$message.success('修改参数成功') 
        },
        showInput(row){
            row.inputVisible=true
            // 文本框自动获得焦点
             this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
        },
        // 删除参数
        handleClose(i,row){
            row.attr_vals.splice(i,1)
            this.saveAttrvalues(row)
        }
    },
    computed:{
        isBtnDisabled(){
            if(this.selectCateKeys.length!==3){
                return true
            }
            return false
        },
        cateId(){
            if(this.selectCateKeys.length===3){
                return this.selectCateKeys[2]
            }
            return null
        },
        titleName(){
            if(this.activeName==='many'){
                return '动态参数'
            }else{
                return '静态属性'
            }
        }
    }
})
</script>

<style lang="less" scoped>
.cat_opt{
    margin: 15px;
}
.el-cascader{
    margin-left: 10px;
}
.input-new-tag{
    width: 120px;
}
</style>
